1 /*
   2  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <jni.h>
  29 #if defined (__SUNPRO_C) && __SUNPRO_C >= 0x5140
  30 #pragma error_messages(off, SEC_ARR_OUTSIDE_BOUND_READ)
  31 #endif
  32 
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36 
  37 JNIEXPORT jstring JNICALL Java_SEGVOverflow_nativesegv(JNIEnv *env, jobject obj) {
  38   char *buffer1;
  39   char *buffer2;
  40   char *buffer3;
  41   char ch;
  42 
  43   jstring ret = NULL;
  44 
  45   // sleep for a bit to let the libadimalloc library initialize
  46   sleep(5);
  47 
  48   // allocate three buffers
  49   buffer1 = (char *)malloc(64);
  50   buffer2 = (char *)malloc(64);
  51   buffer3 = (char *)malloc(64);
  52   if ((buffer1 == NULL) || (buffer2 == NULL) || (buffer3 == NULL)) {
  53     // this return will result in a test failure
  54     return ret;
  55   }
  56 
  57   // Read past the end of each buffer multiple times to increase the probability
  58   // that an ADI version mismatch occurs so an ADI fault is triggered.
  59   ch = buffer1[70];
  60   ch = buffer2[70];
  61   ch = buffer3[70];
  62   ch = buffer1[140];
  63   ch = buffer2[140];
  64   ch = buffer3[140];
  65 
  66   // create a failed test return value because this test should have cored
  67   buffer1 = "TEST FAILED, a read past the end of a buffer succeeded.";
  68   ret = (*env)->NewStringUTF(env, buffer1);
  69 
  70   return ret;
  71 }
  72 
  73 #ifdef __cplusplus
  74 }
  75 #endif